<template>
  <el-image
    :src="`${realSrc}`"
    fit="cover"
    :style="`width:${realWidth};height:${realHeight};`"
    :preview-src-list="realSrcList"
  >
  <template #error>
	<div class="image-slot">
		<i class="picture-outline"></i>
	</div>
  </template>
  </el-image>
</template>

<script>
import {isExternal} from '@/utils/validate';

export default {
	name: 'ImagePreview',
	props: {
		src: {
			type: String,
			required: true,
		},
		width: {
			type: [Number, String],
			default: '',
		},
		height: {
			type: [Number, String],
			default: '',
		},
	},
	computed: {
		realSrc() {
			const real_src = this.src.split(',')[0];
			if (isExternal(real_src)) {
				return real_src;
			}

			return process.env.VUE_APP_BASE_API + real_src;
		},
		realSrcList() {
			const real_src_list = this.src.split(',');
			const srcList = [];
			real_src_list.forEach(item => {
				if (isExternal(item)) {
					return srcList.push(item);
				}

				return srcList.push(process.env.VUE_APP_BASE_API + item);
			});
			return srcList;
		},
		realWidth() {
			return typeof this.width === 'string' ? this.width : `${this.width}px`;
		},
		realHeight() {
			return typeof this.height === 'string' ? this.height : `${this.height}px`;
		},
	},
};
</script>

<style lang="scss" scoped>
.el-image {
  border-radius: 5px;
  background-color: #ebeef5;
  box-shadow: 0 0 5px 1px #ccc;
  :v-deep .el-image__inner {
    transition: all 0.3s;
    cursor: pointer;
    &:hover {
      transform: scale(1.2);
    }
  }
  :v-deep .image-slot {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #909399;
    font-size: 30px;
  }
}
</style>
